Pumping-jack.



vL. B. SMITH.

PUMPING JACK. APPLICATION FILED MAR'.1B,1914.

Patented July 6, 1915.

LENIoUs :0. SMITH, or HELIxoBEG N'.

PUMPIN G- JAGK.

Specification of Letters Patent.

- Patented J my o, 1915.

Application filed March is, 1914. SerialNo. 825,721.

To all whom it may concern:

Be it known that I, Lemons D. SMITH, a citizen of the United States, residing at Helix, in the county of Umatilla, State of Oregon, have invented certain new and useful Improvements in Pumping-Jacks; and I do hereby declare the following to be a full, clear,'and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pumping jacks.

The object of the invention resides in the provision of a pumping jack designed to be operated by power and embodying an improved construction whereby same may be quickly and effectively associatedwith an ordinary hand pump for the purpose of operating the latter.

. Vith the'above and other objects in View the invention consists inthe details of construction and in the arrangement and combination of parts to be hereinafter'more fully described and particularly pointed out in the appended claim.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters of reference denote corresponding parts in the several views, and in which Figure 1 is a side elevation of the invention showing same applied to an ordinary hand operated pump; Fig, 2, a front view of what'is shown in Fig.1 with parts above the power mechanism broken away; Fig. 3, a

rear view of same; Fig. 4, a section on the line 44 of Fig. 1; Fig. 5, a perspective view of the frame of the jack and including the clamping block secured thereto, and Fig. 6, a perspective view of the cross head which is connected to the pump stem.

Referring. to the drawings A indicates generally an ordinary hand operated pump and includes a protecting casing 10, plunger rod 11 and stem 12 pivotally connected to the upper end of the plunger rod.

The improved jack is shown as comprising a U-shaped frame B including arms 13 and 14 and an arm connecting portion 15. Secured to the outer ends of the arms 13 and 14 by means of bolts 15 are bearings 16-respectively in which is journaled a shaft 17. The bolts 15' also secure to the arms 13 and 14 legs 18 whereby one end of the frame is supported. The arm connecting portion 15 is provided with a recess or socket 19 which receives the casing 10. Secured to the arm connecting portion 15 011 each side of the recess 19 is a rod 20 which extends across the sides of the casing 10 respectively. Engaged on the rods 20 is a clamping block 21 which bears against the front side of the casing 10 and threaded on the rod 20 are nuts 22 through the manipulation of which the casing 10 is clamped between the arm connecting portion 15 and the block 20 and in this manner the end of the frame B remote from the legs 18 is rigidly supported upon the casing 10. J ournaled transversely of the frame B adjacent the arm connecting portion 15 is a shaft 23 which has fixed on the ends thereof gears 24 and 25 disposed respectively adjacent the outer side of the arms 13 and 14. Mounted upon each of the gears 24 and 25 is an outwardly directed wrist pin 26 and secured to each of the wrist pins 26 is one end of a pitman 28. The ends of the pitmen 28 remote from the wrist pins 26 are connected to opposite ends of a cross head 29. This cross head 29 is provided with laterally directed spaced ears 30 between which is pivoted the pump stem 12. Fixed on the shaft 17 and meshing respectively with the gears 24 and 25 are gears 31 and 32 which are shielded by guards 33 secured to the frame B. Fixed on the shaft 17 between the arms 13 and 14 is a belt wheel 34 whereby the jack may be connected with any suitable source of power.

From the foregoing construction it will be obvious that the rotation of the shaft 17 will effect a reciprocation of the pitmen 28 which in turn will effect areciplocation of the pump stem 12 and the plunger rod 11 to operate the pump.

What is claimed is A pumping jack comprising a U-shaped frame having its arm connecting portion provided with a recess for receiving a pump casing, rods having one end secured to the arm connecting portion of said frame and disposed respectively on opposite sides of said recess, a clamping block engaged on said rod, means for forcing said clamping block against a pump casing disposed between sameand the arm connecting portion of the frame, legs secured respectively to the free ends of said frames, a shaft journaled. transversely of the frame gears fixed on respective ends of said shafts, pitmen having one end secured to said gears, a cross head connecting the other ends of said pitmen, means carried by the cross head for piv0tally connecting same to a reciprocating e1 ment of a pump, and means for rotating said shaft.

In testimony whereof, I afiix my signature, in the presence of two witnesses. I LENIOUS D. SMITH. Witnesses:

L. P. NORVELL, WM. Po'r'rs. 

